#header{
    background-color: #76b852;
    color: #f2f2f2;
    font-size: 40px;
    height: 80px;
    line-height: 80px;
    text-align: center;
    width: 100%;
}
#content{
    width: 1024px;
    margin: 50px auto;
}
table{
    margin: 0 auto;
    width: 1000px;
}